Yes. Administrators can add images by navigating to their Management Dashboard, selecting the Topics button, then the "Create New Topic" orange button as seen below:
Complete the first page of creating your topic. On the second page, locate the Media section where you can upload one or more images. Note: If you've already created a topic and want to add a custom image, locate your topic in the Management Dashboard, select "Edit" and navigate to the Media section. Upload your new image and select "Update Topic" to save your changes.